Investigation of fatigue damage accumulation by measurements of deformation response to narrow notch increment

摘要

A new destructive method of damage accumulation quantifying in the stress concentration zone has been proposed and verified. Damage accumulation in the vicinity of the hole was created by means of preliminary low-cycle fatigue loading of specimens with holes. The damage accumulation functions for different stress ratio and stress range are expressed in an explicit form proceeding from distributions of the normalized stress intensity factor as a function of number of cycles.